The three were arrested over the weekend, after Burkheimer's body was found in the woods.

Prosecutors say Anderson, an ex-boyfriend of Burkheimer, asked her to meet him at a duplex south of Everett on Sept. 23. There, Burkheimer was beaten, placed into a bag and driven to the woods outside Gold Bar. She was ordered to kneel to the ground and then shot, according to documents.

Yesterday, prosecutors filed charges and arrest warrants for three additional men who haven't been found.

One of the men, John Alan Whitaker, a 22-year-old transient, was charged with first-degree murder and kidnapping. Prosecutors are seeking $1 million cash-only bail.

Another, Yusef Jihad, 32, lived in the duplex where Burkheimer was allegedly beaten. He was charged with first-degree kidnapping, and prosecutors are seeking $250,000 cash-only bail.

Investigators say the third man, Jeffrey Scott Barth, 22, later bragged to a friend that he helped beat a girl in a garage with a revolver. He, too, was charged with first-degree kidnapping.

Jihad's girlfriend told deputies that a young woman tied up in the garage asked for help when she removed a gag from her mouth. The woman said she tried to cut the ropes binding Burkheimer's hands, but Anderson pushed her out of the way, and she and others were later told to leave, according to the court documents.

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People who know of a crime but did not participate in it are not criminally responsible, even if they fail to report it, Snohomish County Chief Criminal Deputy Prosecutor Jim Townsend explained yesterday.

Burkheimer's parents released a statement yesterday thanking everyone who helped solve the case.